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BRowl
Associate II
May 22, 2021
Solved

Is there any way to read the reflectivity value from the VL53L0x? I found an API function for setting the limit on the reflectivity, but I haven’t found any way to read the actual reflectivity value.

  • May 22, 2021
  • 1 reply
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Best answer by John E KVAM

That's because we changed the name on you. If you want the reflectivity, read the signal strength. But that's the signal strength the sensor sees. To find the reflectivity of an object at a given distance, I recommend reading the signal strength and number of SPADS. Then compute the signal per SPAD. Sometimes I nomalize it by multiplyiing by 200. (200 is pretty much the max number of SPADs you will see.) But that's up to you.

Using Signal per SPAD you get a good indication of what you are seeing.

  • john

1 reply

John E KVAM
John E KVAMBest answer
ST Employee
May 24, 2021

That's because we changed the name on you. If you want the reflectivity, read the signal strength. But that's the signal strength the sensor sees. To find the reflectivity of an object at a given distance, I recommend reading the signal strength and number of SPADS. Then compute the signal per SPAD. Sometimes I nomalize it by multiplyiing by 200. (200 is pretty much the max number of SPADs you will see.) But that's up to you.

Using Signal per SPAD you get a good indication of what you are seeing.

  • john